D. y = 9 because it has a complete zero slope while the y-intercept of the equation is 9, so the equation is y = 9.
I think you forgot to put the image in the question
A millennium is 1000 years.
Multiply the number of seconds in 1 year by 1000:
31,536,000 x 1,000 = 31,536,000,000 seconds.
This answer would be 21 because you’d just do 15 increased by 40% which gave me 21
